//package com.csust.travel.common;
//
//
//import cn.hutool.core.util.StrUtil;
//import com.auth0.jwt.JWT;
//import com.auth0.jwt.JWTVerifier;
//import com.auth0.jwt.algorithms.Algorithm;
//import com.auth0.jwt.exceptions.JWTDecodeException;
//import com.auth0.jwt.exceptions.JWTVerificationException;
//import com.csust.travel.entity.NewUsers;
//import com.csust.travel.entity.User;
//import com.csust.travel.exception.ServiceExceptionPlus;
//import com.csust.travel.mapper.NewUsersMapper;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.stereotype.Component;
//import org.springframework.web.servlet.HandlerInterceptor;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//
//@Component
//public class JwtInterceptor implements HandlerInterceptor {
//
//    @Autowired
//    private NewUsersMapper newUsersMapper;
//
//    @Override
//    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
//        // 处理 OPTIONS 请求
//        if (request.getMethod().equalsIgnoreCase("OPTIONS")) {
//            response.setStatus(HttpServletResponse.SC_OK);
//            return true;
//        }
//
//        String token = request.getHeader("token");
//        if (StrUtil.isBlank(token)) {
//            token = request.getParameter("token");
//        }
//
//        // 执行认证
//        if (StrUtil.isBlank(token)) {
//            throw new ServiceExceptionPlus("401", "请登录");
//        }
//
//        // 获取 token 中的 user id
//        String userId;
//        try {
//            userId = JWT.decode(token).getSubject();
//        } catch (JWTDecodeException j) {
//            throw new ServiceExceptionPlus("401", "请登录");
//        }
//
//        // 根据 token 中的 userid 查询数据库
//        User user = newUsersMapper.selectById(userId);
//        if (user == null) {
//            throw new ServiceExceptionPlus("401", "请登录");
//        }
//
//
//        // 用户密码加签验证 token
//        JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(user.getPassword())).build();
//        try {
//            jwtVerifier.verify(token); // 验证 token
//        } catch (JWTVerificationException e) {
//            throw new ServiceExceptionPlus("401", "请登录");
//        }
//
//        return true;
//    }
//}
